Support TEST_{PREFIX,SUFFIX} with leading/trailing whitespace

Closes #2149

extras/Catch.cmake

@@ -231,8 +231,8 @@ function(catch_discover_tests TARGET)
               -D "TEST_SPEC=${_TEST_SPEC}"
               -D "TEST_EXTRA_ARGS=${_EXTRA_ARGS}"
               -D "TEST_PROPERTIES=${_PROPERTIES}"
-              -D "TEST_PREFIX=${_TEST_PREFIX}"
-              -D "TEST_SUFFIX=${_TEST_SUFFIX}"
+              -D "TEST_PREFIX='${_TEST_PREFIX}'"
+              -D "TEST_SUFFIX='${_TEST_SUFFIX}'"
               -D "TEST_LIST=${_TEST_LIST}"
               -D "TEST_REPORTER=${_REPORTER}"
               -D "TEST_OUTPUT_DIR=${_OUTPUT_DIR}"
@@ -277,8 +277,8 @@ function(catch_discover_tests TARGET)
       "      TEST_SPEC"              " [==[" "${_TEST_SPEC}"              "]==]"   "\n"
       "      TEST_EXTRA_ARGS"        " [==[" "${_EXTRA_ARGS}"             "]==]"   "\n"
       "      TEST_PROPERTIES"        " [==[" "${_PROPERTIES}"             "]==]"   "\n"
-      "      TEST_PREFIX"            " [==[" "${_TEST_PREFIX}"            "]==]"   "\n"
-      "      TEST_SUFFIX"            " [==[" "${_TEST_SUFFIX}"            "]==]"   "\n"
+      "      TEST_PREFIX"            " [==['" "${_TEST_PREFIX}"            "']==]"   "\n"
+      "      TEST_SUFFIX"            " [==['" "${_TEST_SUFFIX}"            "']==]"   "\n"
       "      TEST_LIST"              " [==[" "${_TEST_LIST}"              "]==]"   "\n"
       "      TEST_REPORTER"          " [==[" "${_REPORTER}"               "]==]"   "\n"
       "      TEST_OUTPUT_DIR"        " [==[" "${_OUTPUT_DIR}"             "]==]"   "\n"

extras/CatchAddTests.cmake

@@ -235,8 +235,10 @@ function(catch_discover_tests_impl)
   set(_WriteToFileThreshold 50000)
 
   set(add_tags "${_ADD_TAGS_AS_LABELS}")
-  set(prefix "${_TEST_PREFIX}")
-  set(suffix "${_TEST_SUFFIX}")
+  # TEST_{PREFIX,SUFFIX} is enclosed in single quotes to keep ensure
+  # leading/trailing whitespace isn't trimmed by CMake's argument passing.
+  string(REGEX REPLACE "^'(.*)'$" "\\1" prefix "${_TEST_PREFIX}")
+  string(REGEX REPLACE "^'(.*)'$" "\\1" suffix "${_TEST_SUFFIX}")
   set(spec ${_TEST_SPEC})
   set(extra_args ${_TEST_EXTRA_ARGS})
   set(properties ${_TEST_PROPERTIES})

tests/TestScripts/DiscoverTests/CMakeLists.txt

@@ -15,6 +15,8 @@ if(CMAKE_VERSION GREATER_EQUAL 3.27)
 endif()
 catch_discover_tests(
   tests
+  TEST_PREFIX " prefix "
+  TEST_SUFFIX " suffix "
   ADD_TAGS_AS_LABELS
   DISCOVERY_MODE PRE_TEST
   ${extra_args}

tests/TestScripts/DiscoverTests/VerifyRegistration.py

@@ -21,6 +21,11 @@ TestInfo = namedtuple('TestInfo', ['name', 'tags'])
 
 cmake_version_regex = re.compile(r'cmake version (\d+)\.(\d+)\.(\d+)')
 
+# Note that these both intentionally include preceding/trailing space,
+# which should not get stripped.
+CTEST_NAME_PREFIX = ' prefix '
+CTEST_NAME_SUFFIX = ' suffix '
+
 def get_cmake_version():
     result = subprocess.run(['cmake', '--version'],
                             capture_output = True,
@@ -221,7 +226,7 @@ def extract_tests_list_from_ctest_script(build_path: str) -> List[str]:
         print(f'stdout: {err.stdout}')
         exit(4)
 
-    lines = result.stdout.strip().split('\n')
+    lines = [x for x in result.stdout.split('\n') if x.strip()]
     test_num_line = lines[0]
     test_lines = lines[1:]
 
@@ -281,7 +286,7 @@ if __name__ == '__main__':
     print(f"{len(catch_test_names)} tests matched in CTest listing")
 
     test_list_names = sorted(extract_tests_list_from_ctest_script(build_path))
-    expected_names = sorted(info.name for info in raw_catch_test_names)
+    expected_names = sorted(CTEST_NAME_PREFIX + info.name + CTEST_NAME_SUFFIX for info in raw_catch_test_names)
     if test_list_names != expected_names:
         print("TEST_LIST variable (tests_TESTS) does not match Catch2 test listing!")
         for name in test_list_names: